Table of Contents
30
B-6
Serial data interface to the volume corrector
Intrinsically safe RS-485 interface for four-wire operation
Designation ....................................
Cable connection ...........................
Cable cross-sectional area ............
Cable length ...................................
Screening .......................................
Transmission speed
for cable length
up to
500 m .................
up to
1,000 m .................
Safety limits ...................................
B-7
Digital outputs
Individually electrically isolated transistor outputs (open collector)
Designation ....................................
Cable connection ...........................
Screening .......................................
Switching voltage ...........................
Switching current ...........................
Voltage drop ..................................
Residual current .............................
Frequency
A1, A3, A4 ...........................
A2 ........................................
* With a cable length of more than 10 m between the FE260 and the volume corrector (intrinsically safe
electrical circuit) the maximum frequency cannot be guaranteed. (See B-5 and Chapter 0).
** With a smaller load (lower switching current) the frequency which can be transmitted is reduced.
In this case a resistance can be wired in parallel to the load so that in total a switching current of approx.
40 to 50 mA (no more) is produced. The resistance should have a rating of 2 watts or higher.
Note that the switching current at frequencies above approx. 1 Hz cannot be measured with a
commercially available ammeter (multimeter). You can connect an ammeter to the input of the device
which is to be later connected to the FE260 to determine the switching current.
Operating Manual
"R" (received data), "T" (sent data)
Screw terminals, blue
0.5...1.5 mm²
Fit wire-end sleeves to flexible stranded wires
1000 m max. depending on transmission speed (see below)
Connect cable screen to the cable gland over the full area
19200 Bd max.
9600 Bd max.
(see Declaration of Conformance A-2)
"A1", "A2", "A3", "A4"
Screw terminals, green, for
- solid wires 0.14...2.5 mm²
- flexible wires
Fit wire-end sleeves to flexible stranded wires
Connect cable screen to the cable gland over the full area
30 V
max.
50 mA max.
1.5 V
max.
0.01 mA max.
10 Hz max. for cable length up to 10 m *
500 Hz max. for cable length up to 10 m *
and 40 to 50 mA switching current **
0.14...1.5 mm²
FE260
- Quick Links:
- Power Supply to the Fe260
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